Superadiabatic-type magnetic amplification in conventional cosmology
Astrophysics
2009-11-10 v3 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We consider the evolution of cosmological magnetic fields in FRW models and outline a geometrical mechanism for their superadiabatic amplification on large scales. The mechanism operates within standard electromagnetic theory and applies to FRW universes with open spatial sections. We discuss the general relativistic nature of the effect and show how it modifies the adiabatic magnetic evolution. Assuming a universe that is only marginally open today, we estimate the main features of the superadiabatically amplified residual field.
Cite
@article{arxiv.astro-ph/0504089,
title = {Superadiabatic-type magnetic amplification in conventional cosmology},
author = {Christos G. Tsagas and Alejandra Kandus},
journal= {arXiv preprint arXiv:astro-ph/0504089},
year = {2009}
}
Comments
Minor changes. Published version